the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > inflorescence or collective flower > 			[noun]		 > of particular type, shape, or arrangement > spike (6)		
Botany. A form of inflorescence consisting of sessile flowers borne on an elongated simple axis.
transferred. A spike composed of spikelets; also figurative said of a red or flame-coloured flower.
Botany. A floral spikelet. rare.
Botany. A floral spikelet (cf. spicula, n. 3).