From the second edition (1989):
(saɪm) Also 8 cime. [a. F. cime, cyme, in the sense ‘top, summit’ (12th c. in Hatzf.):—pop. L. cima = L. cyma (see above); in the Bot. sense an 18th c. adaptation of the ancient L.]
†1. (cime.) A ‘head’ (of unexpanded leaves, etc.). Obs. rare.
1725 Bradley Fam. Dict. s.v. Sallet, The Buds and tender Cime of Nettles by some eaten raw, by others boiled.
2. Bot. (cyme.) A species of inflorescence wherein the primary axis bears a single terminal flower which develops first, the system being continued by axes of secondary and higher orders which develop successively in like manner; a centrifugal or definite inflorescence: opposed to raceme. Applied esp. to compound inflorescences of this type forming a more or less flat head.
1794 Martyn Rousseau's Bot. v. 55 The arrangement of the flowers in the elder is called a cyme. 1854 S. Thomson Wild Fl. iii. (ed. 4) 250 The meadow-sweet, with its crowded cymes.
3. Arch. = cyma.
1877 Blackmore Erema III. xlvii. 106 This is what we call a cyme-joint, a cohesion of two curved surfaces.